package henu.javaweb.servlet;

import java.io.IOException;
import java.io.PrintWriter;
import java.net.URLEncoder;
import java.sql.Date;
import java.sql.PreparedStatement;
import java.sql.SQLException;
import java.text.ParseException;
import java.text.SimpleDateFormat;

import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import henu.javaweb.dao.DaoFactory;
import henu.javaweb.util.WebDbPool;

/**
 * Servlet implementation class AlterTeacherServlet
 */
@WebServlet("/AlterTeacherServlet")
public class AlterTeacherServlet extends HttpServlet {
	private static final long serialVersionUID = 1L;
       
    /**
     * @see HttpServlet#HttpServlet()
     */
    public AlterTeacherServlet() {
        super();
        // TODO Auto-generated constructor stub
    }

	/**
	 * @see HttpServlet#doGet(HttpServletRequest request, HttpServletResponse response)
	 */
	protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
		// TODO Auto-generated method stub
		response.getWriter().append("Served at: ").append(request.getContextPath());
	}

	/**
	 * @see HttpServlet#doPost(HttpServletRequest request, HttpServletResponse response)
	 */
	protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
		request.setCharacterEncoding("utf-8");
		response.setCharacterEncoding("utf-8");
		PrintWriter out=response.getWriter();

		int result= DaoFactory.getTeacherDaoInstance().update(request);

		if(result == 0){
			String a = URLEncoder.encode("修改失败", "UTF-8");
			out.print("<script type=\'text/javascript\'>alert(decodeURIComponent('"+a+"'));history.go(-1);</script>");
		}else{
			String a = URLEncoder.encode("修改成功", "UTF-8");
			out.print("<script type=\'text/javascript\'>alert(decodeURIComponent('"+a+"'));history.go(-1);</script>");
			response.sendRedirect("jsp/admin/add.jsp");

		}
        
	}

}
